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Finding the Fourth Proportional to 642,171.48, 885,980.70 and 370,233.37

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Solution

The fourth proportional to 642,171.48, 885,980.70 and 370,233.37 is: 510,797.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,171.48 : 885,980.70 = 370,233.37 : x
  2. Step 2: Convert to fraction form
    642,171.48/885,980.70 = 370,233.37/x
  3. Step 3: Cross multiply
    642,171.48x = 885,980.70 × 370,233.37
  4. Step 4: Simplify right side
    642,171.48x = 328,019,620,315.96
  5. Step 5: Solve for x
    x = 328,019,620,315.96/642,171.48
  6. Step 6: Final answer
    x = 510,797.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.